<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card>
      <!-- 搜索与添加区 -->
      <el-row :gutter="20">
        <el-col :span="9">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable
                    @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDiglogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      
      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <div>
              <!-- 修改按钮 -->
              <el-button type="primary" icon="el-icon-edit" size="mini"
                          @click="showEditDialog(scope.row.id)">
              </el-button>
              <!-- 删除按钮 -->
              <el-button type="danger" icon="el-icon-delete" size="mini"
                          @click="removeUserById(scope.row.id)"></el-button>
              <!-- 分配角色按钮 -->
              <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                <el-button type="warning" icon="el-icon-setting" size="mini"
                            @click="setRole(scope.row)"></el-button>
              </el-tooltip>
            </div>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum" :page-sizes="[1,2,5,10]"
        :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper"
        :total="total">
        </el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="提示" :visible.sync="addDiglogVisible" width="50%"
                @close="addDialogClised">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 内容底部按钮区域 -->
      <span slot="footer" class="dialog-footer">
          <el-button @click="addDiglogVisible = false">取 消</el-button>
          <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户信息的对话框 -->
    <el-dialog title="修改用户信息" :visible.sync="editDialogVisible"
                width="50%" @close="editDialodClosed">
      <el-form :model="editForm" :rules="editFormRules" 
                ref="editFormRef" label-width="70px">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible"
                width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option v-for="item in relosList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRloeInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data(){
    //验证邮箱的桂策
    var checkEamil = (rule, value, callback) =>{
      //验证邮箱的正则表达式
      const regEmail = /^([A-Za-z0-9\u4e00-\u9fa5])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return callback();
      }
      callback(new Error('请输入正确的邮箱'))
    };
    // 验证手机号的规则
    var checkMobile = (rule, value, callback) =>{
      //验证手机的正则表达式
      const regMpbile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMpbile.test(value)) {
        return callback();
      }
      callback(new Error('请输入正确的手机号码'))
    };

    return {
      //获取用户列表的参数对象
      queryInfo: {
        query: '', //搜索关键字
        pagenum: 1, //当前的页数，可以绑定到current-page上
        pagesize: 2, //当前每页显示多少条数据，可以跟page-size绑定使用
      },
      //从接口请求到的用户数据列表
      userList: [],
      total: 0,
      addDiglogVisible: false, //控制添加用户对话框的显示与隐藏
      editDialogVisible: false, //控制修改用户信息对话框的显示与隐藏
      addForm: { //添加用户的表单数据
        username: '',
        password: '',
        email: '',
        mobile: '',
      },
      addFormRules: { //添加表单的验证规则对象
        username: [
          {required:true, message:'请输入用户名', trigger:'blur' },
          {min:3, max:10, message:'用户名的长度在 3 到 10 个字符', trigger:'blur' }
        ],
        password: [
          {required:true, message:'请输入用户名', trigger:'blur' },
          {min:6, max:15, message:'用户名的长度在 6 到 15 个字符', trigger:'blur' }
        ],
        email: [
          {required:true, message:'请输入邮箱', trigger:'blur' },
          {validator:checkEamil, trigger:'blur'}
        ],
        mobile: [
          {required:true, message:'请输入手机号', trigger:'blur' },
          {validator:checkMobile, trigger:'blur'}
        ],
      },
      //用id查询到的用户信息对象
      editForm: {},
      editFormRules: { //修改表单的验证规则对象
        email: [
          {required:true, message:'请输入邮箱', trigger:'blur' },
          {validator:checkEamil, trigger:'blur'}
        ],
        mobile: [
          {required:true, message:'请输入手机号', trigger:'blur' },
          {validator:checkMobile, trigger:'blur'}
        ],
      },
      setRoleDialogVisible: false, //控制分配角色对话框的显示与隐藏
      userInfo: {}, //需要分配角色的用户信息
      relosList: [], //所有角色的数据列表
      selectRoleId: [] //已选中的角色id值
    }
  },
  created(){
    this.getUserList()
  },
  methods: {
    async getUserList(){
      const {data: res} = await this.$http.get(
        'users',
        {params: this.queryInfo})
        if(res.meta.status != 200){
          return this.$message.error('获取用户列表失败')
        }
        this.userList = res.data.users
        this.total = res.data.total
        // console.log(res);
    },
    // 监听pageSize改变的事件
    handleSizeChange(newSize){
      // console.log(newSize); //最新的条数
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage){
      // console.log(newPage);
      this.queryInfo.pagenum = newPage //当前页数
      this.getUserList()
    },
    //监听switch开关状态的改变
    async userStateChanged(userInfo){
      // console.log(userInfo);
      const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if(res.meta.status != 200){
        userInfo.mg_state = !userInfo.mg_state //取反保证点击时状态不改变
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('更新用户状态成功')
    },
    //监听用户对话框的关闭事件
    addDialogClised(){
      this.$refs.addFormRef.resetFields()
    },
    //点击按钮，添加用户的函数
    addUser(){
      this.$refs.addFormRef.validate(async valid=> {
        // console.log(valid);
        if(!valid) return //如果没通过验证就不走下面的添加了
        //可以发起添加用户的网络请求了
        const {data:res} = await this.$http.post('users', this.addForm)
        if(res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        this.addDiglogVisible = false //隐藏添加用户的对话框
        this.getUserList() //重新获取用户列表数组(相当于刷新了一些页面)
      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id){
      const {data:res} = await this.$http.get('users/'+id)
      if(res.meta.status != 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    //监听修改用户信息对话框的关闭事件
    //(关闭重置)
    editDialodClosed(){
      this.$refs.editFormRef.resetFields()
    },
    //修改用户信息并提交
    editUserInfo(){
      this.$refs.editFormRef.validate(async valid => {
        // console.log(valid); //为true火false
        if(!valid) return
        //通过验证才能发起修改用户信息的请求
        const {data:res} = await this.$http.put('users/'+this.editForm.id,{
          email: this.editForm.email,
          mobile: this.editForm.mobile,
        })
        if(res.meta.status != 200) {
          return this.$message.error('更新用户数据失败')
        }
        //关闭对话框
        this.editDialogVisible = false
        //刷新数据列表
        this.getUserList()
        //提示修改成功
        this.$message.success('更新用户信息成功！')
      })
    },
    //根据id删除对应的用户信息
    async removeUserById(id){
      //弹框询问用户是否删除数据
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      
      if(confirmResult != 'confirm') {
        return this.$message.info('已经取消删除')
      }
      // console.log('确认删除');
      const {data: res} = await this.$http.delete('users/' + id)
      if(res.meta.status != 200) {
        return this.$message.error('删除用户失败！')
      }
      this.$message.success('删除用户成功！')
      this.getUserList() //刷新列表
    },
    //展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      //在展开对话框之前获取所有角色的列表
      const {data:res} = await this.$http.get('roles')
      if(res.meta.status != 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.relosList = res.data

      this.setRoleDialogVisible = true
    },
    //点击按钮分配角色
    async saveRloeInfo() {
      if(!this.selectRoleId){
        return this.$message.error('请选择要分配的角色！')
      }

      const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid: this.selectRoleId})
      if(res.meta.status != 200) {
        return this.$message.error('更新角色失败！')
      }
      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    //监听角色对话框的的关闭事件
    setRoleDialogClosed() {
      this.selectRoleId = ''
      this.userInfo = ''
    }
  },
}
</script>

<style lang="less" scope>
  .el-pagination {
    margin-top: 15px;
  }
</style>